These Duco coated cast iron ferrule cleanouts are installed in hub openings in drainage piping where a cleanout is required. The cast iron, straight thread lead seal plug can be quickly and easily removed. The ferrule is grooved on the outside to prevent turning. Two circular chrome plated bronze frames are available. They are fitted with anchoring lugs that secure the frame to the wall. Fig. 4432 is designed for face-of-wall installation in tile, masonry, or dry wall construction. It is usually installed on an opening in the finished wall. Fig. 4433 is intended for flush-with-wall installation in plaster or wet wall construction and is installed during the wall construction.